three.js: texture on shapegeometry - three.js

Question

I'm working with three.js and I have a plane shape. This shape should get a texture. Below you can see how I try this. The problem is, that the texture is only shown in two stripes at two edges of the shape. If I take higher values for texture.repeat this stripes get thinner.
I know there is a related topic here Three.JS Is it possible to render a texture on shapeGeometry?, but I can't understand how that could help me.
//Draw Floorshape
var points_floor = [];
points_floor.push(new THREE.Vector2(edges[edges.length-1][edges[3].length-1][0], edges[edges.length-1][edges[3].length-1][1]));
for (var i = 0; i < edges.length; i++) {
for (var j = 0; j < edges[i].length; j++) {
points_floor.push(new THREE.Vector2(edges[i][j][0], edges[i][j][1]));
}
}
var shape_floor = new THREE.Shape(points_floor);
var floorGeometry = new THREE.ShapeGeometry(shape_floor);
var texture = new THREE.ImageUtils.loadTexture("./img/tileable_wood_texture_by_ftIsis_Stock.jpg");
texture.repeat.set(0.1, 0.1);
texture.wrapS = texture.wrapT = THREE.RepeatWrapping;
var materialFloor = new THREE.MeshBasicMaterial({
map : texture,
side : THREE.DoubleSide
});
var floor = new THREE.Mesh(floorGeometry, materialFloor);
floor.overdraw = true;